Shoe-forming- machine



Feb. 3 1931. R. L. HUBBARD SHOE FORMING MACHINE Filed Dec. 6 1925 5Shaets-Sheet Feb. 3, 1931. R. 1.. HUBBARD SHOE FORMING MACHINE Filed DEG1,926

5 Sheets-Sheet 2 Hill Filed Dec. 6, 1926 5 Sheets-Sheet 3 fin/)? Z07"Rahr/Lfigiblufr/ M;

Feb. 3, 1931. R, L, HUB ARD 1,791,059

SHOE FORMING MACHINE Filed Dec. 6. 192 5 Sheets-Sheefi 4 :0 junior Feb.3, 1931. R. HUBBARD 1,791,059

' SHOE FORMING MACHINE Filed Dec. 6 925 5 Sheets- Sheet 5 A Zovagy N a?Q Patented Feb. 3, 1931 warren err ROBERT L. HUBBARD, 015 Los ANGELES,CALIFORNIA SHOE-FORMING MACHINE Application filed December 6, 1926.Serial No.,152,803.

This invention has to do with shoe forming machines and it is an objectof this invention to provide an efiective, practical and improvedmachine of this general character.

It is a general object of my present invention to provide improvementsin shoe making or forming machines of the general type set forth inUnit-ed States Letters Patent, No. 1,580,893, issuedto me April 13,1926; whereby such machines are made more effective and practical.

It is a particular object of my present invention to provideimprovements in the forming irons or dies of a shoe making ma- ].5chine.

Another object of this invention is to provide shoe forming plates whichare effective in fully shaping a linin or upper over a last, it being aparticular feature of the inven- 3 tion that a lining or upper becompletely formed over a last in a single operation.

Another feature of my invention is the provision of a power operatedshoe forming machine which control 'means which oper- 95 ates to preventovertravel of the parts and which protects the machine againstoperations, such as might injure it.

It is another feature of this invention to provide a shoe formingmachine including two units of forming plates, related so that anoperator can conveniently handle orattend both of them withoutinterruption in operation.

The various objects and features of my invention will be best and morefully understood from the following detailed description of a typicalpreferred form of the invention throughout which description referenceis made to the accompanying drawings, in which;

Fig. 1, is an end elevation of the machine showing the parts in positionready to start operation.

Fig. 2, is a view, similar to Fig. 1, showing the parts completelyoperated to form a lining or vamp over a last and in position ready forthe formed shoe to be released for removal from the machine.

Fig.3, is a plan view, taken as indicated by line 33 on Fig. 2. V

Fig. 4, is a side view of themachine with certain parts broken away toshow in sections and showing one of the sets of forming plates inposition ready to start operation and the other set of forming plates inposition where a lining or vamp has been completelyformed over a last. I

Fig. 5, is an enlarged detailed view of certain parts shown in Fig. 1;being a view taken as indicated on line 55, on Fig. 4.

Fig. 6, is an enlarged plan view taken as indicated by line 6-6 on Fig.1, showing the parts-in the opposite operative position.

Fig. 7, is a fragmentary view, illustrating a portion of the formingplate operating means, the automatic clutch release. which operates tostop operation of the forming plates upon their reaching a predeterminedposition, and the automatic lock which operates to prevent the machinebeing thrown into operation, except when the parts are ready foroperation.

Fig. 8, is a side elevation of the sleeveiron or plate showing itindependent of its mountmg.

Fig. 9, is a side elevation of one of the supports for 'thesleeve plate.

Fig. 10, is'a View of the support shown in Fig. 9, being a view taken asindicated'by line 1010, on Fig. 9. V

Fig. 11, is a plan view ofthe sleeve plate takenwith the plate in oneposition.

Fig. 12, is a View of thesleeve plate taken with the plate in thereverse posit-ion.

Fig. 13, is a side elevation of the clamp plate.

Fig. 14, is a plan view of the clamp plate showing a clamp plate to beused in forming a shoe for the leftfoot and to cooperate with 7 thesleeve plate illustrated in Fig. 12.

Fig. 15, is a view of a clamp plate to be used when forming a shoe forthe right foot and to cooperate with the sleeve plate illustrated inFig. 11.

Fig. 16, is a side elevation of the base or sole plate.

Fig. 17, is a plan View of a sole plate to be used when forming a shoefor the right foot and for use in combination with the clamp plate,illustrated in Fig. 15.

Fig. 18, is a plan view of a sole plate to be used in forming a shoe forthe left foot and for use in combination with the clamp plate shown inFig. 14.

The machine provided by this invention is designed primarily to carryout the general scheme of operation set forth in the above mentionedpatent, however, there are certain important features of my inventionnot concerned with, or limited to, any specific type of machine. Tofacilitate an understanding of the description to follow, I will herebriefly set forth a process of shoe manufacture; such as may beadvantageously carried out with the machine provided by this invention.

Themachinemay be employed to last or form a-lining over alast'or to forma vamp or outer leather over a last on which alining and inner sole and/or a box-toe and counter have been previously assembled. The machineprovided by this invention is adapted to be used in connection with themanufacture of stitch-down shoes with unitary uppers.

The operation of the present machine may start upon a last on which alining and inner soleare togbe assembled, the leather or ma terial' toform the lining is formed over the last and secured by a suitable cementto the projecting margin or edge portion of the inner sole. The leatherforming the lining completely covers the last above thein'ner sole andis drawn smoothly over the last and so that it is without joints orseams except where thelining joins the -inner sole. The last with thelining formed over it is then removed from the machine after which thelining and projecting portion of the inner sole may be stitchedtogether. In practice an outwardly flanged box-toe and counter may bearranged over the lining previous to the application of the upperleather. A main sole may be stitched to the inner sole and the shoefinished in any desired manner. In practice an outwardly flanged box-toeand counter may be arranged over the lining previous to the applicationof vampor outer leather.

Assuming the operation of the machine to start with a last only,thelining to be formed 'over the last is substituted for the vamp orupper forming leather above referred to and the inner sole is arrangedunder the last so that the machine operates to form a lining over thelast and flange it outwardly on the periphery portion of the inner sole;it being understood that a suitable cement may be applied to hold thelining in place on the inner sole until it can be properly stitched.

The machine provided by this invention includes a frame and two sets orunits of forming plates arranged to be operated insuitable synchronismfrom a single drive shaft. The general operation of the two sets offorming plates is the same, so therefore, I will describe in detail theconstruction and operation of The machine comprises, generally, a frame20, two sets offorming irons or plates 21, one designated as set A andthe other as set E. Referring to one set of plates the machine includesa mounting 22, for one of the plate parts, a mounting 23 for another ofthe plate parts and a mounting 24for another of the plate parts, means25 for operating the plate part mounting 22, means 26 for operatingplate part mounting 24:, a carriage 27, for the mounting 24, a clutch28, for conveying power from a drive shaft 29 to the machine, means 30,for automatically releasing the clutch when the machine has completedthe formation of a piece of material over a last, manual control means31, for closing the clutch, lock means 32 whereby the clutch cannot beclosed when any part of the machine is not in position ready foroperation, and various other parts and means, the details and functionsof which will be set forth in the description to follow.

The frame 20 includes, generally, a top plate 33 supported'on endstandards 34. The end standards 34 include spaced leg parts joined neartheir lower ends by horizontal parts 35. In the particular constructionshown in the drawings, the frame includes horizontal beams 36 whichextend lengthwise of the machine between the parts to form mountings forvariousparts'of the mechanism hereinafter described. The particularframe ust described, and which is illustrated throughout the drawing, ismerely typical of the general construction that may be em-- ployed incarrying out the invention and is not to be construed as limiting theinvention in any way.

Each set of forming irons or plates 21, includes a sleeve plate 37having an opening 38 extending vertically through it, a top or clampplate 39 arranged above the sleeve plate and having an opening 40adapted to register with the opening in the sleeve plate, and a base orsole plate 41 adapted to carry a last upwardly through the openings inthe sleeve plate and clamp plate to form a leather blank, held betweenthe sleeve plate and clamp plate, over the last. In accordance withcertain of the broader features of my invention, the plate parts may bevaried in formation and their manner of co-operation; for instance, theymay follow the teachings of my above mentioned patent; in which case thesleeve plate and clamp plate are reversible to form shoes for the leftfoot or for the right foot.

In the particular form of the invention shown in the drawings, thesleeve plate 37 is reversible to be useful in forming a shoe for eitherfoot, while the clamp plates and sole plates are made for formingrespectively a left shoe or a right shoe and, therefore, must beprovided in lofts and rights to be changed as conditions require.

The sleeve plate 37 is a comparatively deep plate with an opening 38extending vertically through it, which opening corresponds in shape tothe plan outline of a shoe and is just sufficiently large to pass a lastcarrying an innersole which projects somewhat beyond the last. When thesleeve plate is in one position, for instance, as shown in Fig. 12, theplan configuration of the, opening through the plate corresponds to thatof a shoe for the left foot. Face 50 of the sleeve plat-e'which isuppermost when the plate is in the position shown in Fig. 12, is curvedtransversely as shown in the drawings to correspond to the configurationof the last of a left shoe along the line of joinder of the lining andouter leather and the innersole.

When the plate 37 is reversed from the po-' sition just described, theplan configuration of the opening 38 corresponds to that of a shoe forthe right foot and the face 51 of the plate which is then uppermost, isfinished to correspond to the curvature of a last of a shoe for theright foot along the line of joinder of the lining and outer leather andthe innersole.

The clamp plate 39 to be used during the formation of a left shoe has anopening 40 through it, corresponding to the plan configuration of a leftshoe, which opening is slightly smaller than the opening 38 in thesleeve plate so that the clamp plate has a part projecting somewhatinwardly from overhanging the sleeve plate. The clamp plate is curvedtransversely to correspond generally to the transverse curvature of theface .of the sleeve plate, so that the clamp plate and sleeve plate canbe brought together as illustrated in Fig. 2, to hold a leather blankbetween them. A clamp plate to be used in the formation of a right shoeis the same as that for a left shoe except that the opening 40 is shapedto correspond to the plan configuration of a right shoe.

The sole plate 41-, forms a rest or support for the innersole and thelast over which the lining or vamp is to be formed and operates to carrythe last upwardly through the sleeve plate until the projecting portionof the inner sole previously tacked to the last, comes into contact withthe lining or outer leather which is held in position beneath theportion of the clamp plate which overhangs the opening in the sleeveplate. The sole plate used in forming a left shoe corresponds, ofcourse, to the plan configuration of a left shoe, while that used forforming a right shoe corresponds to the plan configuration of a rightshoe. The sole plates are made to slidably fit the opening in the sleeveplate and are transversely curved to correspond to the transversecurvature of the plates.

The mounting means provided for the sole plate includes a push rod 55mounted in the frame 20 to operate vertically. The sole plate is adaptedto be arranged on a mounting pin 56 formed on the upperend of the pushrod, the pin 56 is on a plate 56a mounted on the upper end of the pushrod. The push rod slidatbly fits an opening in the top plate 33 and isprovided at its lower end with clamp an extension 57 which slidably fitsan opening' 58, in a cross-head 59. The cross head 59 is slidablymounted in a vertical guideway 60 in the frame 20. A strong compressionspring 61 is arranged under compression between a shoulder near thelower end of the push rod and the top of the cross-head so that itoperates to normally urge the push rod upwardly. The upward movement ofthe push rod with reference to the cross heard is limited by a nut 62applied to the lower end. of extension 57 to engage the lower side ofthe cross head. With this arrangement the push rod is moved verticallyby operating the cross head vertically in the guideway 60 and the spring61 provides a cushion or. yielding means which prevents the sole die onthe upper end of the push rod being forced past the desired positionwith reference to the-clamp die. r r

The mounting 23, provided for the sleeve plate 37, includes socketmembers mounted in vertical guideways 71 formed in brackets 72. Thebrackets 72 extend upwardly from the top plate 33 of the frame. Thesocket members 70 are provided with sockets 73 to receive and hold lugs74, provided on the ends of the sleeve die. Rods .75 project downwardlyfrom the socket members 7 O and slidably fit openings 'in'the top plate33 of the frame. Compression springs 7 7 are providedbetween the topplate of the frame and nuts 7 8 screw thread on the rods 75 so that theyoperate to normally urge the rods upwardly.

The sockets 73 are in the form of elongate openings in the members 7 0,and are open at their upper ends to allow the lugs at the sleeve ends tobe passed into them. The lugs 7 4 on the ends of the die are shaped tofit the sockets in the members 70 so that the members 7 O operate toeffectively hold the sleeve die with its opening in proper alignmentwith reference to the sole die and clamp die. The mounting justdescribed allows the sleeve die to be lifted from the member 70, when itis desired to reverse it, or to insert another size.

The mounting 24 for the clamp die 39 includes blocks mounted in guidebrackets 81 supported by the carrier 27. The guide brackets 81 arearranged so that the blocks 80 are oppositely disposed to receive theends of the clamp die 39. The guide members 81,

which carry the blocks 80, are formed with horizontal guide-ways 82which carry the blocks 80 so that they can be reciprocated horizontallyin a direction parallel with the longitudinal axis of the clamp die.

The carriage 27, which holds or supports the guide brackets 81 mayinclude two rods 84, slidably mounted in the top plate 33 and thebrackets 72, a top brace 85, connecting the upper ends of t 1e rods 84,and a bottom brace 86 connecting the lower ends of the rods 84. The rods84 are located immediately beyond the ends of the forming plates andaremounted to be movable vertically. The guide brackets 81 are fixed onthe upper portions of the rods 84. The top brace 85 tends between theupper ends of the rods 84 above members 81, while the lower brace 86extends between the lower ends of of therods 84 at a point below the topplate 33 of the frame.

The carriage 27 is made vertically movable so that it can belowered froma position shown in Fig. 1, where the clamp die is spaced above thesleeve die to a position such as is shown in Fig. 2, where the clamp diecooperates with the upper face of the sleeve die to hold a vamp orlining to be lasted as the sole die is operated. 7

The means 26 provided for operating the carrier 27 between the positionsjust clescribed, may include a hand lever 88 mounted on ashaft 89, andan arm 90 carried by the shaft 89 to co-operatively engage the lowerbrace member 86 of the carriage.

In the particular construction shown in the drawings the lower bracemember 86 of the carriage is in the form'of a channel and the arm 90 isprovided at its outer end with a pinmounted roller 91 which fits thechannel. As the hand lever 88 is rotated, the arm 90 is swung, thuscausing operation of the carriage. In the proper arrangement of parts,the arm 90 extends slightly beyond a line straight down when the clampplate is in the down or clamped position with reference to the sleeveplate.

The drive means 25, between the clutch 28 connected with the power shaft29 and the push rod upon which the sole plate is supported includes aworm shaft 93 connected with the clutch 28, a worm gear 94 on shaft 93,a main shaft 95, a worm wheel 96 fixed on the shaft 95, in mesh with theworm gear 94, a crank pin 97 on the end of the main shaft 95,

- and a connecting rod 98 connecting the crank pin 97 with the crosshead 59.

W hen the clutch is closed or in engagement, the shaft 93 is operated,causing operation of the main shaft 95, through the gears 94 and 96.Operation of the main shaft 95 causes turning of the crank pin whichthrough the connecting rod causes vertical reciprocation of the crosshead 59, and lifts push rod 55. The means 30, provided to automaticallydisengage the clutch 28 upon the sole plate being operated to thedesired position, includes a sleeve 100 fixed on the main shaft 95 andhaving projections l01adapted to be moved into engagement with an arm102 of a bell crank which has its other arm 103 operatively connectedwith a sleeve 104 on the shaft 93. The sleeve 104 is connected with apart of the clutch 28.

In the particular mechanism shown in'the drawing, there are twoprojections 101 on the sleeve 100. This is necessary because the crankpins 97 of the operating means for the sole plates of the two units ofplates A and B are on the main shaft 95, and are located 180 degreesapart so that the units of plates operate oppositely; that is, one ismoved to the operating position while the other is withdrawn therefrom.It is thus necessary to automatically stop the machine twice during eachcomplete revolution of the main shaft, once when the sole plate of theplate set A is up and once-when the sole plate of the plate set B is up.The parts are related so that the arm 102 is actuated by the projectionsto move the arm 103 so that the sleeve 104 is slid on the shaft 93 todisengage the clutch; the parts being related and timed so that theclutch disengages each time one of the sole plates reaches the positionwhere it tightly clamps against a clamp plate.

An emergency foot lever 106 is operatively connected with the arm 102through a link 107, so that the clutch can be disengaged at any time atthe will of the operator.

lVith the mechanism just described, the machine will automatically stopeach time a projection 101 co-operatively engages the arm 102 in aboutthe manner illustrated in Fig. 7.

The manual means 31 provided for throwing the clutch into engagement toreturn the machine to operation, includes a rotatable shaft 108 providedwith a hand lever 109 to be engaged by the operator and arm 110 whichengage the sleeve 100 to move it longitudi nally on the main shaft 95,when the shaft 108 is rotated.

A spring 111 is provided in connection with the shaft 108 to normallyhold it in a rotative position where the sleeve 100 is in position sothat the projections 101, co-operate with the arm 102. \Vhen the shaft108 is rotated through the hand lever 109, the sleeve 100 is movedlongitudinally so that the projectionslOl move out of line or positionwhere they co-operate with arm 102, thus allowing the arm 102 to bereturned to its unactuated position through the action of a spring 112carried on the shaft 93. The spring 112 normally holds the sleeve 104 inposition where the clutch is closed.

The means 26a provided by my invention fOr operating the clamp plate 39,horizontally in proper synchronism with the operation of the sole die41, includes cams 115 mounted in the guides 81 back of the blocks 80,and means interconnecting the cams 115 so that they operate insynchronism. When one block 80 is moved outwardly in its guide 82 theother is allowed to move inwardly in its guide 82. The cams 115 areoperatively connected with the push rod 55 so that the cams are operatedin proper synchronism with the push rod 55. The inter-connection betweenthe cams 115 may include an arm 118, in connection with each cam and atie rod 119, connecting the outer parts of the arms in the mannerclearly illustrated in Figs. 1, 2 and 7 of the drawings. The operativeconnection between the push rod 55 and the cams 115 includes a bellcrank having one arm 120 arranged to be operated by a projection 121 onthe push rod 55, and an arm 122,

connected with a connecting rod 123 which extends upwardly from the arm122, and connects with an arm 125 connecting with one of the cams 115.As the cross head 59 and push rod 55 move upwardly the projection 121 engages the arm 120 moving it upwardly so that the arm 122 is moveddownwardly. This operation, through the connecting rod 123, operates thearm 125 so that the cams 115 are turned, causing the forward operationof the clamp die 39.

The parts just described are positioned and related so that theprojection 121 does not engage the arm to move it until the last, beingcarried upwardly by the sole die 41, is in position where the point C ofthe last, is at, or opposite the heel edge of the clampl plate. Fromthat point of operation on, the projection 121. operates the arm 120 sothat the clamp plate is moved through the mechanism just described, in adirection forward with reference to the last, being moved up wardlythrough it so that the heel portion of the leather blank being formedover the last, isshaped Or wiped againstand around the heel portion ofthe last. If it were not for this forward movement of the clamp plate asthe'last is moved upward to its final position, with reference to theforming irons or plates, the heel seat of the upper would be formedstraight down from the point C. A spring 126 is provided in connectionwith the arm 122 to normally hold the parts in position where the clampplate is in its unactuated or rear position.

The particular mechanism just described,

is very effective and desirable as it allows the carriage 27 to be movedupwardly to the position shown in Fig. 1, when the sole plate is downwithout disturbing or breaking interconnection of parts. TV hen thecarriage 27 is moved to the up position, shown in Fig. 1, the arm 125 ispulled down and the arm 122 is moved up but none of the parts aredisconnected. The moving of the arm 125, down, simply operates the clampplate 39, to its forward position while the carriage is elebein moved torelease the arm 102 when either of the clamp plates 39 of the machineare in the raised position as shown in Fig. 1. This locking meansincludes a locking dog 130 carried on a shaft 131, a locking dog 132carried on a sleeve 133 fitting over a portion of the shaft 131, arms134 one fixed on the shaft 131, and one fixed on the sleeve 133, andlinks 135, one connecting one of the arms 134 with one of the carriages27, and the other connecting other arm 134C with the other carriage 27The connection between the arms 12% and links 135 includes pins 136 onthe arms operating in slots 137 formed longitudinally in the arms 135.The arms are pivotally connected to the lower brace members.

of the carriages.

The parts just described are arranged and proportioned so that themovement of one of the carriages to the up position, shown in Fi 1,causes the link 135 connecting with the carriage, to lift or swing itsconnecting arm 134 upwardly, throwing the dog connected with that arminto engagement with the sleeve 100, so that the sleeve cannot be movedlongitudinally on the counter shaft 95. Return of the carriage to itsnormal or operating position causes the link connected with the carriageto lower the connected arm 135, and thus disengages the dog so that thesleeve 100 is free to move.

In operating the machine a last is lowered into or through the sleeveplate into position on the sole plate and a leather blank to be formedover the last is arranged over the sleeve plate whereupon vthe clampplate is lowered, so that the leather blank is clamped between thesleeve plate and the 'clampplate. The mounting of the sleeve plate abovede scribed, allows'the clamp plate to be moved downwardly to a positionwhere the sleeve plate is depressed slightly againstthe resistance ofthe springs 77 this causes the leather to be held with the desiredpressure. As before stated, the clamp plate and sleeve plate preferablyco-operate to grip at varying degrees of grip or pressure at all pointsexcept at the toe portion at which point it is desirable to leave theleather free.

To throw the machine into operation, the aperator actuates the lever109, moving the sleeve 100, and releasing the arm 102. This closes theclutch and causes the push rod 55 to be moved upwardly through themechanism above described... As the push rod 55 moves upwardly, to movethe last up against the leather, the clamp plate is moved forward at theproper time and in proper synchronism with the sole plate, so that theleather is effectively shaped under the heel iii) portion of the last.When the sole plate reaches a point where it clamps the leather andinner sole, on the last, tightly against the clamping plate one of theprojections 101 actuates the arm 102 to release the clutch. The operatorthen actuates the lever 88 to raise the carriage 2'2". The last with theleather formed over it, is lifted from the sleeve plate in and by theclamp plate. The operator then removes the leather covered last from theclamp plate and makes ready for another operation.

The two plate sets A and B, as above described, operate oppositely; thatis while the sole plate of one set is moving upwardly that of the otheris moving downwardly, making itpossible for a single operator to keeptwo sets of plates in operation.

In the operation of forming a shoe over a last by means of the mechanismabove described, the projecting portion or flange of the inner sole, andthe outwardly turned por tion of the leather intended to be formed overthe last, have previously had applied to them a suitable cement oradhesive paste so that when the inner sole and the lining or outerleather of the shoe are pressed between the sole plate 41 and the clampplate 39, the cement adheres and holds the leathers together untilstitched by means of another machine, the mechanism herein described asmy invention being one intended primarily for the purpose of forming orlasting a sheet of material over a last or the like.

Having described only a typical preferred form of my invention I do notwish to limit myself to the specific details set forth, but,

wish to reserve to myself any changes or variations that may appear tothose skilled in the art or fall within the scope of the followingclaims.

Having described by invention, I claim 1. In shoe forming apparatus, twoplate parts movable together to hold a sheet of material, and means formoving a complete shoe last so that the material is formed entirely overit while held by the plate parts, the plate parts being shiftable withrelation to each other while in holding position.

2. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate,mechanism connected thereto for moving a last to form the material overit, and means whereby the clamp plate is shifted relative to the last toform the material inwardly on the last.

3. In shoe forming apparatus, a sleeve plate, a clamp. plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate,mechanism connected thereto for moving a lastto form the material overit, and means operating in synchronism with the sole plate whereby theclamp plate is shifted relative to the last to form the materialinwardly on the last.

4. In shoe forming apparatus, a sleeve plate, a clamp plate cooperating.with the sleeve plate to hold a sheet of. material, a sole plate,mechanism connected thereto for moving a last to form the material overit, means whereby the clamp plate is shifted relative to the last toform the material inwardly on the last, and an inter-connection betweenthe sole plate and said means whereby they operate together.

5. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate,mechanism connected thereto for moving a last to form the material overit, and means whereby the clamp plate is shifted longitudinally relativeto the last to form the material inwardly on the last.

6. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate,mechanism connected thereto for moving a last to form the materialoverit, and cam operated means whereby the clamp plate is shifted relativeto the last to form the material inwardly on the last.

7. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate,mechanism connected thereto for moving a complete shoe last to form thematerial entirely over it, a mounting for the clamp plate whereby it canbe shifted when in holding position, and cam means for shifting theclamp plate.

8. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate, meansfor operating the sole plate to carry a complete shoelast intoengagement with the material so that the material is formed over theentire last, means whereby the clamp plate can be shifted when inholding position, and an inter-connection between said means wherebythey operate in synchronism.

9. In shoe forming apparatus, a sleeve plate, a clamp plate cooperatingwith the sleeve plate to hold a sheet of material, a sole plate forcarrying a complete shoe last, a push rod for operating the sole plateso that the material is formed entirely over the last, means forshifting the clamp plate when in holding position, and aninter-connection between said means and the push rod whereby the clampplate is shifted during operation of the sole plate.

10. In shoe forming apparatus, a last carrying member, a reciprocatinghead, crank means for reciprocating the head, a push rod carrying themember and connected with the head for limited sliding movement, and aspring in connection with the rod and head normally holding the rod inextended position with relation to the head.

11. In shoe forming apparatus, two plates operable to hold a sheet ofmaterial, a carriage for moving one of the plates, and a hand crank foractuating the carriage, the crank being operable to dead center to holdthe apparatus actuated.

12. In shoe forming apparatus, means for holding a sheet of material,means for moving a last into engagement with the material, power means,a releasable drive connection between the power means and means formoving the last, and means operating to hold the drive connection indisengaged position when the first mentioned means is out of operation.

13. In shoe forming apparatus, two plate parts movable into and out ofposition where they hold a sheet of material, a last moving means, powermeans, a releasable drive connection between the power means and lastmoving means, and means operable to hold the drive connection releasedwhen the plate parts are out of position to hold a sheet or" material.

In witness that I claim the foregoing I have hereunto subscribed my namethis 10th day of November, 1926.

ROBERT L. HUBBARD.

